парсер

tg_parser/internal/adapter/telegram/history.go

@@ -0,0 +1,46 @@
+package telegram
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/TelegramExchange/tgex-parser/internal/domain"
+	"github.com/gotd/td/tg"
+	"github.com/rs/zerolog/log"
+)
+
+func (t *Telegram) GetChannelHistory(ctx context.Context, channel domain.Channel, limit int) ([]domain.Post, error) {
+	log.Info().Msg(channel.String())
+
+	req := &tg.MessagesGetHistoryRequest{
+		Peer: &tg.InputPeerChannel{
+			ChannelID:  channel.ChannelID(),
+			AccessHash: channel.AccessHash,
+		},
+		Limit: limit,
+	}
+
+	resp, err := t.API().MessagesGetHistory(ctx, req)
+	if err != nil {
+		return nil, fmt.Errorf("resp: %w", err)
+	}
+
+	messages, ok := resp.(*tg.MessagesChannelMessages)
+	if !ok {
+		return nil, nil
+	}
+
+	placements := make([]domain.Post, 0, len(messages.Messages))
+
+	for _, raw := range messages.Messages {
+		m, ok := raw.(*tg.Message)
+		if !ok {
+			continue
+		}
+
+		p := domain.NewPost(channel, m.ID, m.Message, m.Views)
+		placements = append(placements, p)
+	}
+
+	return placements, nil
+}